申请人:——
公开号:US20030069209A1
公开(公告)日:2003-04-10
The present invention provides a menthol derivative represented by the following Formula 1 and a method for preparing the menthol derivative. The menthol derivative represented by the Formula 1 is prepared by reacting menthol and phosphorous oxychloride with an equivalence ratio of 1:1˜1.3 in an organic solvent in the presence of organic base to obtain dichloro[5-methyl-2(mehtylethyl)cylclohexyloxy] phosphino-1-one; and reacting above obtained dichloro[5-methyl-2(mehtylethyl) cylclohexyloxy]phosphino-1-one with 3-amino propanol in the organic solvent in the presence of the organic; then hydrolyzing and crystallizing the product with polar organic solvent. [Formula I]
1
本发明提供了由下式 1 表示的薄荷衍生物和制备该薄荷衍生物的方法。式 1 所代表的薄荷醇衍生物的制备方法是:薄荷醇和氧氯化磷以 1:1˜1.3的比例在有机溶剂中,在有机碱存在下进行反应,得到二氯[5-甲基-2(甲乙基)环己氧基]膦-1-酮;再将上述得到的二氯[5-甲基-2(甲乙基)环己氧基]膦-1-酮与3-氨基丙醇在有机溶剂中,在有机物存在下进行反应;然后用极性有机溶剂对产物进行水解和结晶。[式 I]
1